Headset



FIG. 1 is a front perspective view of a headset;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The short broken lines depict portions of the headset and form no part of the claimed design. The long broken lines depict environment of the headset and form no part of the claimed design. 

CLAIM The ornamental design for a headset, as shown and described. 